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To investigate the effects of exposure to a radiofrequency electromagnetic field and to an extremely low frequency magnetic field on the nasal mucosa and nose skin of rats.
Two experiments were performed. In the first experiment, Wistar rats were exposed (n=14) to a radiofrequency electromagnetic field similar to that emitted from GSM mobile phones or sham exposed (n=7). In the second experiment, Sprague-Dawley rats were exposed to an extremely low frequency magnetic field with a magnetic flux density of 100 µT (n=10) or 500 µT (n=10) or sham exposed (n=10).
周波数 | 900 MHz |
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タイプ |
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ばく露時間 | continuous for 2 h/day, 7 days/week for 10 months |
ばく露の発生源/構造 |
|
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Distance between exposed object and exposure source | 0.6 cm |
ばく露装置の詳細 | rats placed so in a plexiglas carousel that the heads pointed towards the antenna; antenna positioned in the center of the carousel |
Sham exposure | A sham exposure was conducted. |
測定量 | 値 | 種別 | Method | Mass | 備考 |
---|---|---|---|---|---|
電力 | 2 W | - | - | - | - |
周波数 | 50 Hz |
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タイプ |
|
偏波 |
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ばく露時間 | continuous for 2 h/day, 7 days/week for 10 months |
Additional information | oriented vertically |
ばく露の発生源/構造 | |
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ばく露装置の詳細 | pair of Helmholtz coils with a diameter of 25 cm and 225 turns of 1.0 mm diameter insulated soft copper wire, placed horizontally facing each other; rats kept in a methacrylate cage between the coils; animals could move freely inside the cage |
Sham exposure | A sham exposure was conducted. |
In both experiments, no differences were observed between the exposed and the sham exposed rats.
The authors conclude that exposure to a radiofrequency electromagnetic field or to an extremely low frequency magnetic field has no influence on the morphology of the nasal mucosa and nose skin of rats.
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